Dandy roll



July 28, 1931. w, TROTMAN 1,815,939

DANDY ROLL .Filed May 27, 1929 INVEN TOR.

%wcw b A TTORNEY W61 57%? G. Troi mam 45 :ering.

Patented July zs, 1931 invention"relateslto improvements i v infpaper ma iking apparatus 'jan'd is directed N more particularly toimprovement's indandy "rolls-ion paper5makingmachines;

' I watermarkinggdevices afiixed thereto for cons tacti ng with and watermarkinga paper web. 5 "It'is necessarywhen it is desired. to change a I I lingdevicesthedesire'd distance apart:

I this makes it necessary to "provide numerous 0 complete-dandy 1011's all gof; which teat me pense and is objectionable 'i "the dandy' roll' body"without injury thereto.

I In i this wayit is possible 'to I provide numerous @coverings-r r: ;;si g1e bqd s Also vac-- sjcordingrto'ione'important -feature of the invention coverings 7 oil. different diameter and circumference rnay be' provided fora single bodyeby mean"s of all of which the watermark may be "quickly changed =1 by merely? sub stituting one covenfor another; I t

" 1 Thefn'ovel features and advantages of the {inventionwill beidescribed in'fthe form at ;,present preferred iiii connection with. p the 1 f accom an ing drawings; inlvwhich' I i .4 "fFigi l is a side 'elevatioi1al view of a dandy 7 roll j embodying the" novel features of the,

flinventio'n? is f 011 support or body tor supporting the coy- F'gL Ei is aside eleva i-onarview ie covjfig embodying the features of the invention fjwith ='part's broken away: ffor; clearness and ;.Fi ;;4 i janiendljelevational{View of the rfi q'imiitary teetering-shown in *Fig I Q HADLEY r m, mnssaonusnmrs "Application filed M ya, iezafjs' ri lno. 363,519.

f i'swell known aidandy roll consists-es+ i I Sentially ofa roll bodyhaving anouter-"00v er ing of woven ,wire'cloth whichfcarries 'pluralityof guideways spaced about the roll The cover C comprises an outer shell 20 of woven wire fabric material such as is comi monly used in dandy roll construction, This s i is bent or formed into the shape of atube and core member 22 is formed of wire or rod which is wound spirally as shown so-that the andlsupport constitute a unitary rigid and s substantial structure. The cover is heldin ummet I 7 Referring to the drawings, the inventio v y will now bed'escribed'in detail. The invention consists generallyrfof ==a dandy roll body B of some suitableform or removable" cover Gas shown" in ig; 3, which cover isadapted to slip axially over a thebody; i 'i sides of the rods 8. Inthis way the rods. 8

are supported by thelmember 10. l

' Atthe points ofcontact between the rods that the parts are tied together to provide a strong rigid roll body suitable for supporti,

ing the cover C.

I A .plurah y of rings 12 surrounds the rods and are spaced apart thereon between the rings and similar grooves 161 are provided v in the Periphery fthe heads and inali nment therewith. These groovesprovide'a' body and extend from endto end thereof.

is held in shape and supported by an inner supporting core member 22. Preferably this convolutions thereof bear against the inner 1 surfaces ofthe covering 20 and support the i rover inthe desired tubular shape. It may be secured to the cover by soldering or by any OthGI' WGllVkHOWH means so'that, thecover m l/IA I to act'as a support anda unitary se arable 5 The b'ody comprises end header :plates}2 1 V and 4 each of which carries'a trunnion or 6 j' r shaft 6.; Aplurality of longitudinal tie rods 1? Bare afiixedto theplates -2and. 4i as shown. l 1 Aspirally formed member '10, the opposite v 1 ends of which are atfixed to the heads 2and45 g is arrangedintermediateitsends s0that1thel g convolutions thereof bear against 'theinner;

'8 andthe member 10 the parts may be secured I ,l together by brazing, soldering or' the like so i The ob'e'ct of thisinvent'on to provide la dandy roll" comprising "a separable body and unitar-y cover} which is rigid in construe 3 tion so as to be adapted for -removal from and held against relatiye rotative moyements on'saidbo H s 4. A dandy-roll structure comprisingfin combination, a dandy roll body and a movable cover therefor thefsaid body including T circular end plates'in spaced'relation having I f v trunnion shai'tsextending"outwardly from the outer faces thereof, a spirally arranged V member extending between and secured to I i the'inner faces of said plates, rods extending 'longltudlnally of sa d body between" said plates which arespaced around the outer periphery of the spirally arranged e member, rings spaced upon :and encircling said 'ro'ds between ;said platesf'the' said i rend plates and rings having a plurality ofwguideways in alignment and spacedabout .l-th6 outer periphery thereof; the said cover including a hollowcoreformedby a spira1ly' wound'member and'avcovering of wirerloth.

disposed about and Y supported by-- said' spirally WOllIldCOIQ member, a plurality of bars extendinglongitudinally and interiorly of said spirally wound member which arereeeiyable in the guideways of said rings I andplates of the' body whereby the core is I I supported byiand held against relative rotative movement'withlrespect to the body.

In testimonwvhereofl aflix my signature.

ALTER j G. V'TROTMAN.

ria 

